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US Patent: 17,606
Machine for Graduating Lineal Measures
Joint-Rule Graduating Machine
Patentee:
Samuel C. Hubbard - Middletown, CT

USPTO Classifications:
101/5, 33/32.5

Tool Categories:
tool making : making rules
rules : folding rules
rules : rule graduations

Assignees:
Charles C. Hubbard - Middletown, CT

Manufacturer:
Not known to have been produced

Witnesses:
Charles W. Galpin
Isaac Hull

Patent Dates:
Granted: Jun. 16, 1857

Patent Pictures: [ 1 | 2 | 3 ]
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